added validation for current pin parameter in change pin

CHANGELOG.md

@@ -531,6 +531,6 @@
 
 * Updated the logs for label update & delete account
 * Removed unused encryption key parameter in get accounts
-* Added validation for pin parameter in export private key, restore keyring state
+* Added validation for pin parameter in export private key, restore keyring state & current pin parameter in change pin
 * Added validation for encryption key in add account, sign message, delete account, get vault details & update label
 * Sync the pin validation steps with other methods in import wallet

src/lib/keyring.js

@@ -824,6 +824,7 @@ class Keyring {
     }
 
     async changePin(currentPin, newPin, encryptionKey) {
+
         if (!Number.isInteger(currentPin) || currentPin < 0) {
             throw ERROR_MESSAGE.INCORRECT_PIN_TYPE
         }
@@ -832,6 +833,18 @@ class Keyring {
             throw ERROR_MESSAGE.INCORRECT_PIN_TYPE
         }
 
+        const response = await this.validatePin(currentPin);
+
+        if (response.response == false || response.error)  {
+            return { error: ERROR_MESSAGE.INCORRECT_PIN };
+        };
+
+        const err = helper.validateEncryptionKey(this.vault, JSON.stringify(encryptionKey));
+
+        if (err.error) {
+            return { error : err.error }
+        }    
+
         const { error, response: mnemonic }= await this.exportMnemonic(currentPin);
 
         if (error) {